Two stage CRT (Carbon Recycling Technology(

1. Design Principle: Two-Unit CRT Architecture In order to ensure that carbon accounting is auditable, accountable, and easily measurable, CEWT has deliberately structured Carbon Recycling Technology (CRT) into two distinct but connected operational units, rather than treating it as a single aggregated power cycle. This design decision was taken to: • establish clear system boundaries; • enable continuous and independent measurement of carbon flows; and • eliminate ambiguity in emissions attribution. This approach aligns directly with the objectives of the Guarantee of Origin (GO) framework, which prioritises transparency, traceability, and measured outcomes. 2. Fuel Generation Unit (FGU) The Fuel Generation Unit (FGU) is responsible for: • receiving captured CO₂ (measured input); • receiving renewable hydrogen (GO-verifiable input); • converting these inputs into a methane-based energy carrier via methanation. The output of the FGU is Recycled Synthetic Methane Gas (RSMG), which remains within CRT system custody and is not exported or supplied to third parties. 3. Power Generation Unit (PGU) The Power Generation Unit (PGU): • uses RSMG as fuel in a gas turbine combined cycle; • generates electricity; • captures the resulting CO₂ exhaust; and • returns the captured CO₂ back to the Fuel Generation Unit. During steady-state operation, no carbon is released to the atmosphere. 4. Carbon Looping and Auditability By separating the system into two auditable units and connecting them via a closed carbon loop, CRT ensures that every carbon atom is measured on entry, tracked during conversion, measured during combustion, and recycled back into fuel production. There is no Scope-3 exposure, no reliance on offsets, and no dependence on third-party behaviour. Carbon transparency is therefore achieved by system design rather than post-hoc reporting. 5. Terminology Clarification: RSMG vs e-Methane The term “e-methane” is commonly used to describe power-to-gas fuels produced for market export and third-party combustion. This description does not apply to CRT. In CRT: • methane is not exported; • methane is not sold as a fuel product; • methane is not combusted outside system boundaries. The correct term is therefore Recycled Synthetic Methane Gas (RSMG), accurately reflecting that the methane is produced from recycled carbon and renewable hydrogen and functions solely as an internal energy carrier. 6. Product GO Alignment (RSMG) RSMG is assessed only as an internal energy carrier, not as a traded fuel. Key characteristics: • produced from renewable hydrogen and captured CO₂; • carbon remains within system custody; • continuous measurement and reconciliation. Accordingly, RSMG may be recognised as a renewable, carbon-neutral fuel within a closed system for Product GO purposes. 7. Renewable Electricity GO Alignment Electricity generated in the Power Generation Unit: • is derived from RSMG produced using renewable hydrogen; • operates with continuous carbon capture and recycling; • results in zero net atmospheric CO₂ emissions during steady-state operation. Accordingly, electricity generated under CRT qualifies as renewable, carbon-neutral, zero-emission baseload electricity under the Renewable Electricity GO framework. 8. Definitions Carbon Recycling Technology (CRT): A closed-loop system that captures CO₂, converts it using renewable hydrogen into RSMG, and continuously recycles carbon while generating firm electricity. Fuel Generation Unit (FGU): Subsystem responsible for renewable hydrogen input, captured CO₂ input, and RSMG production. Power Generation Unit (PGU): Subsystem responsible for electricity generation and CO₂ capture for return to the FGU. Recycled Synthetic Methane Gas (RSMG): Methane produced from captured CO₂ and renewable hydrogen, used exclusively as an internal energy carrier within CRT. 10. Concluding Statement CRT has been intentionally structured to allow Product GO and Renewable Electricity GO assessments to be conducted on clearly defined subsystems, linked by a measurable carbon loop. This architecture avoids ambiguity, simplifies verification, and supports robust, outcome-based certification under the GO framework.